From conscious + -ness.

• (America) IPA: /ˈkɑnʃəsnəs/
• (RP) IPA: /ˈkɒnʃəsnəs/

consciousness

1. The state of being conscious or aware; awareness.
   • 1897 December (indicated as 1898), Winston Churchill, chapter V, in The Celebrity: An Episode, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., →OCLC ↗:

     Although the Celebrity was almost impervious to sarcasm, he was now beginning to exhibit visible signs of uneasiness, the consciousness dawning upon him that his eccentricity was not receiving the ovation it merited.

• awareness
• witfulness

• unconsciousness

• conscious
• conscience

• French: conscience
• German: Bewusstsein, Gewahrsein, Erkenntnis, Bewusstheit, Wahrnehmung
• Italian: conoscenza, coscienza
• Portuguese: consciência
• Russian: созна́ние
• Spanish: conciencia